Back yard is 45 ft long but only 4 ft wide (out from back of house). Neighbors garage and driveway right next to it (creating the 4 ft width). Just grass now but would like to use the space for something other than just a grassy area. Need ideas for using the space, having a little privacy, and yet not ticking off the nice neighbor. Any suggestions? Have had suggestions of a single lane " can't make a whole lap" pool, a bowling alley, and an air strip for radio controlled airplanes. None of those are working! We are an older couple who would like some thing low maintenance. A small boy lives next door who is very rambuncious so end result must be resilient. We are at a loss for ideas.